Toyota Land Cruiser 1988 Repair Manual page 21

MA-6
Front •
First
MAINTENANCE- Maintenance Operations
8. REPLACE GASKET IN FUEL TANK CAP
(a) Remove the four screws, retainer and old gasket
from the tank cap.
(b) Install the new gasket and retainer with the four
screws.
Gasket
(c) Inspect the cap for damage or cracks.
MA0118
EM4486
EM1519
9.
INSPECT FUEL LINES AND CONNECTIONS
Visually inspect the fuel lines for cracks, leakage, loose
connections, deformation or tank band looseness.
10. INSPECT EXHAUST PIPES AND MOUNTINGS
Visually inspect the pipes, hangers, and connections for
severe corrosion, leaks or damage.
11. EXCEPT CALIFORNIA VEHICLES:
REPLACE OXYGEN SENSORS
(a) Disconnect the oxygen sensor connector.
(b) Remove the two nuts, heat insulator, oxygen sensor
and gasket from the exhaust manifold.
(c) Install new gasket, oxygen sensor and heat insulator
with the two nuts.
Torque: 200 kg-em {14 ft-lb, 20 N·m)
(d) Inspect the oxygen sensor operation.
(See page Fl-80)
Hot Engine Operations
12. ADJUST VALVE CLEARANCE
(a) Warm up the engine to normal operating tempera-
ture.
(b) Stop the engine and remove the cylinder head
cover.
(c) Set No.1 cylinder to TDC/compression.
• Align the TDC mark of the drive plate with the
timing pointer by turning the crankshaft clock-
wise with a wrench.
• Check that the rocker arms on the No.
1
cylinder
are loose and rocker arms on the No. 6 are tight.
If not, turn the crankshaft one revolution (360°) and align
the mark as above.
(d) Adjust the clearance of half of valves.
• Adjust only those valves indicated by arrows.
Valve clearance (Hot):
Intake 0.20 mm (0.008 in.)
Exhaust 0.35 mm (0.014 in.)